Data fragment update by xpath #2 - persistence layer

Issue-ID: CPS-58
Change-Id: Ifc4580936d06c6907d6b5ab20657063b6707ccbe
Signed-off-by: Ruslan Kashapov <ruslan.kashapov@pantheon.tech>

2 files changed, 42 insertions, 10 deletions

diff --git a/cps-ri/src/main/java/org/onap/cps/spi/entities/FragmentEntity.java b/cps-ri/src/main/java/org/onap/cps/spi/entities/FragmentEntity.java
index 677652899..53ceaaae1 100755
--- a/cps-ri/src/main/java/org/onap/cps/spi/entities/FragmentEntity.java
+++ b/cps-ri/src/main/java/org/onap/cps/spi/entities/FragmentEntity.java
@@ -1,6 +1,7 @@
 /*-
  * ============LICENSE_START=======================================================
  *  Copyright (C) 2020 Nordix Foundation. All rights reserved.
+ *  Modifications Copyright (C) 2021 Pantheon.tech
  * ================================================================================
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -83,7 +84,7 @@ public class FragmentEntity implements Serializable {
     @JoinColumn(name = "anchor_id")
     private AnchorEntity anchor;
 
-    @OneToMany(cascade = CascadeType.ALL, fetch = FetchType.LAZY)
+    @OneToMany(cascade = CascadeType.ALL, orphanRemoval = true, fetch = FetchType.LAZY)
     @JoinColumn(name = "parent_id")
     private Set<FragmentEntity> childFragments;
 }
diff --git a/cps-ri/src/main/java/org/onap/cps/spi/impl/CpsDataPersistenceServiceImpl.java b/cps-ri/src/main/java/org/onap/cps/spi/impl/CpsDataPersistenceServiceImpl.java
index d8f3df112..fd4e768ca 100644
--- a/cps-ri/src/main/java/org/onap/cps/spi/impl/CpsDataPersistenceServiceImpl.java
+++ b/cps-ri/src/main/java/org/onap/cps/spi/impl/CpsDataPersistenceServiceImpl.java
@@ -29,6 +29,7 @@ import com.google.gson.GsonBuilder;
 import java.util.Collections;
 import java.util.List;
 import java.util.Map;
+import java.util.Set;
 import java.util.stream.Collectors;
 import org.onap.cps.spi.CpsDataPersistenceService;
 import org.onap.cps.spi.FetchDescendantsOption;
@@ -60,12 +61,10 @@ public class CpsDataPersistenceServiceImpl implements CpsDataPersistenceService
     @Override
     public void addChildDataNode(final String dataspaceName, final String anchorName, final String parentXpath,
         final DataNode dataNode) {
-        final DataspaceEntity dataspaceEntity = dataspaceRepository.getByName(dataspaceName);
-        final AnchorEntity anchorEntity = anchorRepository.getByDataspaceAndName(dataspaceEntity, anchorName);
-        final FragmentEntity parentFragment =
-            fragmentRepository.getByDataspaceAndAnchorAndXpath(dataspaceEntity, anchorEntity, parentXpath);
-        final FragmentEntity childFragment = toFragmentEntity(dataspaceEntity, anchorEntity, dataNode);
-        parentFragment.getChildFragments().add(childFragment);
+        final FragmentEntity parentFragment = getFragmentByXpath(dataspaceName, anchorName, parentXpath);
+        final FragmentEntity fragmentEntity =
+            toFragmentEntity(parentFragment.getDataspace(), parentFragment.getAnchor(), dataNode);
+        parentFragment.getChildFragments().add(fragmentEntity);
         fragmentRepository.save(parentFragment);
     }
 
@@ -114,11 +113,15 @@ public class CpsDataPersistenceServiceImpl implements CpsDataPersistenceService
     @Override
     public DataNode getDataNode(final String dataspaceName, final String anchorName, final String xpath,
         final FetchDescendantsOption fetchDescendantsOption) {
+        final FragmentEntity fragmentEntity = getFragmentByXpath(dataspaceName, anchorName, xpath);
+        return toDataNode(fragmentEntity, fetchDescendantsOption);
+    }
+
+    private FragmentEntity getFragmentByXpath(final String dataspaceName, final String anchorName,
+        final String xpath) {
         final DataspaceEntity dataspaceEntity = dataspaceRepository.getByName(dataspaceName);
         final AnchorEntity anchorEntity = anchorRepository.getByDataspaceAndName(dataspaceEntity, anchorName);
-        final FragmentEntity fragmentEntity =
-            fragmentRepository.getByDataspaceAndAnchorAndXpath(dataspaceEntity, anchorEntity, xpath);
-        return toDataNode(fragmentEntity, fetchDescendantsOption);
+        return fragmentRepository.getByDataspaceAndAnchorAndXpath(dataspaceEntity, anchorEntity, xpath);
     }
 
     private static DataNode toDataNode(final FragmentEntity fragmentEntity,
@@ -140,4 +143,32 @@ public class CpsDataPersistenceServiceImpl implements CpsDataPersistenceService
         }
         return Collections.emptyList();
     }
+
+    @Override
+    public void updateDataLeaves(final String dataspaceName, final String anchorName, final String xpath,
+        final Map<String, Object> leaves) {
+        final FragmentEntity fragmentEntity = getFragmentByXpath(dataspaceName, anchorName, xpath);
+        fragmentEntity.setAttributes(GSON.toJson(leaves));
+        fragmentRepository.save(fragmentEntity);
+    }
+
+    @Override
+    public void replaceDataNodeTree(final String dataspaceName, final String anchorName, final DataNode dataNode) {
+        final FragmentEntity fragmentEntity = getFragmentByXpath(dataspaceName, anchorName, dataNode.getXpath());
+        removeExistingDescendants(fragmentEntity);
+
+        fragmentEntity.setAttributes(GSON.toJson(dataNode.getLeaves()));
+        final Set<FragmentEntity> childFragmentEntities = dataNode.getChildDataNodes().stream().map(
+            childDataNode -> convertToFragmentWithAllDescendants(
+                fragmentEntity.getDataspace(), fragmentEntity.getAnchor(), childDataNode)
+        ).collect(Collectors.toUnmodifiableSet());
+        fragmentEntity.setChildFragments(childFragmentEntities);
+
+        fragmentRepository.save(fragmentEntity);
+    }
+
+    private void removeExistingDescendants(final FragmentEntity fragmentEntity) {
+        fragmentEntity.setChildFragments(Collections.emptySet());
+        fragmentRepository.save(fragmentEntity);
+    }
 }